CN108156547B

CN108156547B - TWS earphone

Info

Publication number: CN108156547B
Application number: CN201711260086.1A
Authority: CN
Inventors: 陈斌
Original assignee: Shenzhen Everwin Precision Technology Co Ltd
Current assignee: Shenzhen Everwin Precision Technology Co Ltd
Priority date: 2017-12-04
Filing date: 2017-12-04
Publication date: 2023-09-12
Anticipated expiration: 2037-12-04
Also published as: CN108156547A

Abstract

The invention relates to the technical field of earphones, and discloses a TWS earphone. The TWS headset includes: the first shell part is provided with a groove, and the bottom of the groove is provided with a through hole; the second shell part is provided with a sound outlet channel, and the groove is communicated with the sound outlet channel through the through hole; and the moving iron unit is accommodated in the groove. According to the TWS earphone provided by the embodiment of the invention, the moving iron unit is adopted as the sound generating unit of the TWS earphone, so that the TWS earphone has the sound generating unit with small volume and high sensitivity, has good high-frequency ductility and excellent sound insulation, and can effectively prevent the occurrence of the sound leakage phenomenon.

Description

TWS earphone

[ field of technology ]

The invention relates to the technical field of earphones, in particular to a TWS earphone.

[ background Art ]

The earphone is an audio output device which receives the electric signals sent by the media player or the receiver and converts the electric signals into audible sound waves by using a loudspeaker close to the ear. Under the condition of not affecting other people, the earphone can not only independently listen to the sound, but also isolate the sound of the surrounding environment, so that the earphone is widely applied to the daily life of people. Headphones have also become a necessary device for various audio playback devices. Headphones can be generally classified into wired headphones and wireless headphones. Due to the inconvenience of wearing wired headphones, wireless headphones are favored by more and more users. The wireless stereo earphone comprises a real wireless stereo earphone (True Wireless Stereo, TWS), namely TWS earphone. The TWS earphone is a device for transmitting stereo signals based on bluetooth technology, i.e. the left and right earphone receives stereo signals from a playing device such as a mobile phone through bluetooth without any wire connection, so as to realize playback.

At present, a TWS earphone generally adopts a moving coil unit as a sound generating unit, and under the general condition, the moving coil unit has larger volume, the whole sound generating unit cannot be placed in the ear, and the larger the volume of the sound generating unit is, the larger the required power is; the sensitivity of the moving coil unit is low, and the high-frequency ductility is poor; in addition, the moving coil unit needs more space and air to participate in vibration in the sounding process, so that the sound leakage phenomenon cannot be effectively controlled, and excellent sound insulation is ensured.

[ invention ]

In order to solve the technical problems, the embodiment of the invention provides a TWS earphone with a small volume, high sensitivity, good high-frequency ductility and good sound insulation.

In order to solve the technical problems, the embodiment of the invention provides the following technical scheme:

a TWS headset comprising:

the first shell part is provided with a groove, and the bottom of the groove is provided with a through hole;

the second shell part is provided with a sound outlet channel, and the groove is communicated with the sound outlet channel through the through hole;

the moving iron unit is accommodated in the groove;

the first shell part is provided with an accommodating space and an installing port communicated with the accommodating space, the groove is formed by the outer surface of the first shell part sinking towards the accommodating space, two opposite side walls of the groove are respectively provided with a first sliding port and a second sliding port, and the accommodating space is communicated with the groove through the first sliding port and the second sliding port;

the TWS earphone further comprises a telescopic component which is arranged on the first shell part and comprises a first connecting rod, a second connecting rod, a third connecting rod, a sliding piece, a gear piece, a rack, a first elastic piece, a second elastic piece, a first baffle and a second baffle, wherein the first baffle and the second baffle are used for limiting the movable iron unit in the groove in an abutting mode;

one end of the first connecting rod is inserted into the accommodating space from the mounting hole, the other end of the first connecting rod is connected with one end of the first elastic piece, the other end of the first elastic piece is mounted on the first shell part, the first connecting rod is hinged with one end of the second connecting rod, the first connecting rod is hinged with one end of the third connecting rod, and the middle part of the third connecting rod is rotatably connected with the first shell part;

the other end of the second connecting rod is hinged with the first baffle, the first baffle is arranged at the first sliding opening, and the first baffle can slide relative to the first sliding opening; the gear piece is arranged in the accommodating space, the gear piece can rotate relative to the first shell part, one end of the sliding piece is fixed on the end face of the other end of the third connecting rod, the gear piece is provided with a sliding hole, the other end of the sliding piece is inserted into the sliding hole, and the sliding piece can slide in the sliding hole;

the second baffle is arranged at the second sliding opening, the second baffle can slide relative to the second sliding opening, the rack is arranged at the second baffle, the gear piece is meshed with the rack, one end of the second baffle is connected with the second elastic piece, and the other end of the second elastic piece is arranged at the first shell part;

the TWS earphone is provided with three moving iron units, and the three moving iron units are accommodated in the grooves.

In some embodiments, when one end of the first connecting rod far away from the first elastic element is pressed, the first connecting rod drives the second connecting rod to move, the second connecting rod drives the first baffle to move towards a first direction, and the first connecting rod drives the third connecting rod to move, the third connecting rod drives the gear element, the gear element drives the rack to move, and the rack drives the second baffle to move towards a second direction opposite to the first direction.

In some embodiments, the TWS headset is further provided with an audio input module and a crossover circuit, the crossover circuit is connected with the audio input module, and the crossover circuit is further connected with the three moving iron units, respectively.

In some embodiments, the three moving iron units include a first moving iron unit, a second moving iron unit, and a third moving iron unit, the first moving iron unit and the second moving iron unit sounding through a first copper tube, and the third moving iron unit sounding through a second copper tube.

In some embodiments, the TWS earpiece further includes a seal disposed at the junction of the recess and the sound outlet channel.

In some embodiments, the second housing part is provided with a sound outlet hole, the through hole of the groove is aligned with one end of the sound outlet channel, and the other end of the sound outlet channel is aligned with the sound outlet hole, so that sound generated by the moving iron unit propagates to the sound outlet channel through the through hole and passes through the sound outlet hole from the sound outlet channel.

In some embodiments, the TWS earpiece further includes a damping screen disposed at an end of the sound outlet channel that is distal from the recess.

In some embodiments, the TWS headset further includes an upper cover that covers the first housing portion.

In some embodiments, the moving iron unit is a square structure.

Compared with the prior art, the TWS earphone provided by the embodiment of the invention adopts the moving iron unit as the sound generating unit of the TWS earphone, so that the TWS earphone has the sound generating unit with small volume and high sensitivity, has good high-frequency ductility and excellent sound insulation, and can effectively prevent the occurrence of the sound leakage phenomenon.

[ description of the drawings ]

One or more embodiments are illustrated by way of example and not limitation in the figures of the accompanying drawings, in which like references indicate similar elements, and in which the figures of the drawings are not to be taken in a limiting sense, unless otherwise indicated.

Fig. 1 is a schematic perspective view of a TWS earphone according to an embodiment of the present invention;

FIG. 2 is an exploded view of a TWS headset provided by an embodiment of the present invention;

fig. 3 is another schematic perspective view of a TWS earphone according to an embodiment of the present invention;

FIG. 4 is a schematic view of the telescoping assembly of FIG. 2;

FIG. 5 is an exploded view of the telescoping assembly shown in FIG. 2;

fig. 6 is a schematic view of the motion of the telescoping assembly shown in fig. 2.

[ detailed description ] of the invention

In order that the invention may be readily understood, a more particular description thereof will be rendered by reference to specific embodiments that are illustrated in the appended drawings. It will be understood that when an element is referred to as being "fixed" to another element, it can be directly on the other element or one or more intervening elements may be present therebetween. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or one or more intervening elements may be present therebetween. The terms "vertical," "horizontal," "left," "right," "inner," "outer," and the like are used in this specification for purposes of illustration only.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and/or" as used in this specification includes any and all combinations of one or more of the associated listed items.

Referring to fig. 1-3, a TWS earphone 100 is provided in an embodiment of the invention. The TWS headset 100 includes a first housing portion 10, a second housing portion 20, and a moving iron unit 30. The first housing part 10 is provided with a recess 101, and the bottom of the recess 101 is provided with a through hole. The second housing part 20 is provided with a sound outlet channel 201, and the recess 101 communicates with the sound outlet channel 201 through the through hole. The moving iron unit 30 is accommodated in the groove 101. The sound generated by the moving iron unit 30 may be transmitted to the sound emitting channel 201 through the through hole, and then transmitted outwards through the sound emitting channel 201, so that the sound may be transmitted into the ear of the user. By using the moving iron unit 30 as the sound generating unit of the TWS earphone 100, the volume of the sound generating unit of the TWS earphone 100 is small, the sensitivity is high, and the TWS earphone 100 has good high-frequency ductility and excellent sound insulation, so that the occurrence of the sound leakage phenomenon can be effectively prevented.

The first housing part 10 is of a generally hollow triangular structure, and in some other embodiments, the first housing part 10 may be of other suitable structure, such as a hollow hemisphere, a hollow cylinder, or a hollow cuboid. The first housing part 10 is provided with a recess 101, and the recess 101 is configured to accommodate the moving iron unit 30. The bottom of the groove 101 is provided with a through hole, and the through hole is used for communicating the groove 101 with the sound outlet channel 201, so that the sound emitted by the moving iron unit 30 propagates to the sound outlet channel 201.

The first housing part 10 is further provided with a housing space 103 and a mounting port 104 communicating with the housing space 103. The groove 101 may be formed by recessing an outer surface of the first housing part 10 toward the receiving space 103. The outer surface of the first housing 10 is a surface facing away from the accommodating space 103. Two opposite side walls of the groove 101 are respectively provided with a first sliding opening and a second sliding opening 106, and the accommodating space 103 is communicated with the groove 101 through the first sliding opening and the second sliding opening 106. Wherein the first sliding opening and the second sliding opening 106 are disposed substantially flush with two opposite sidewalls of the recess 101.

The second housing portion 20 is generally a hollow cylindrical structure, and in some other embodiments, the second housing portion 20 may be other suitable structures, such as a hollow cuboid, etc. The second housing 20 is provided with a sound outlet channel 201 and a sound outlet hole, the through hole of the groove 101 is aligned with one end of the sound outlet channel 201, and the other end of the sound outlet channel 201 is aligned with the sound outlet hole, so that the sound generated by the moving iron unit 30 propagates to the sound outlet channel 201 through the through hole, passes through the sound outlet hole from the sound outlet channel 201, and is further transmitted into the ear of the user.

The moving iron unit 30 is generally square in shape, and in some other embodiments, the moving iron unit 30 may have other suitable structures, for example, the moving iron unit 30 may have a circular structure, etc. The moving iron unit 30 is a sound generating unit which is conducted to the center point of a miniature vibrating diaphragm through a connecting rod with precise structure, so as to generate vibration and generate sound. The moving iron unit 30 is a substantially closed container structure, and only a small current is required to drive the moving iron unit 30, so that the moving iron unit 30 has high sensitivity. The moving iron unit 30 has the characteristics of small volume, small area, and good high-frequency ductility. The smaller the volume of the moving iron unit 30, the smaller the power thereof, thereby making the power of the moving iron unit 30 smaller. Moreover, since the moving iron unit 30 has a small area, the moving iron unit 30 can be easily placed into the auditory canal, so that the area of the in-ear part is effectively reduced, and the moving iron unit 30 can be placed into a deeper auditory canal part, so that the TWS earphone 100 using the moving iron unit 30 as a sound generating unit has good sound insulation and can effectively prevent the occurrence of the phenomenon of sound leakage.

In the embodiment of the present invention, the TWS earphone is provided with three moving iron units 30. The three moving iron units 30 are accommodated in the grooves 101. The three moving iron units 30 include a first moving iron unit, a second moving iron unit, and a third moving iron unit. The first moving iron unit and the second moving iron unit make sound through the first copper pipe, and the third moving iron unit makes sound through the second copper pipe. And the first copper tube and the second copper tube are aligned with the sound emitting channel. The TWS earphone 100 is provided with an audio input module and a frequency dividing circuit, the frequency dividing circuit is connected with the audio input module, and the frequency dividing circuit is respectively connected with the three moving iron units 30. The audio input module is used for receiving audio signals, for example, the audio signals sent by the external electronic equipment are received through the wireless communication module. And, the audio input module sends the audio signal to the crossover circuit. The frequency dividing circuit sends a high-frequency part in the audio signal to the first moving iron unit, sends an intermediate-frequency part in the audio signal to the second moving iron unit, and sends a low-frequency part in the audio signal to the third moving iron unit, namely the first moving iron unit is responsible for high-frequency output, the second moving iron unit is responsible for intermediate-frequency output, the third moving iron unit is responsible for low-frequency output, and the sounds output by the three moving iron units 30 are mixed and overlapped in the sound output channel 201, so that the TWS has good sound expression on the whole frequency, thereby improving the sound quality effect of the TWS earphone 100. It should be noted that the crossover circuit is an element in a common speaker system, and the crossover circuit belongs to the prior art, so the circuit connection relationship inside the crossover circuit is not described herein.

Referring to fig. 4-6, in an embodiment of the present invention, the TWS earphone 100 further includes: telescoping assembly 40. The telescopic assembly 40 is provided in the first housing part 10. The telescopic assembly 40 includes a first connecting rod 401, a second connecting rod 402, a third connecting rod 403, a sliding member 404, a gear member 405, a rack 406, a first elastic member 407, a second elastic member 408, a first baffle 409, and a second baffle 410. The first baffle 409 and the second baffle 410 are used for limiting the moving iron unit 30 located in the groove 101 in an abutting manner.

One end of the first connecting rod 401 is inserted into the accommodating space 103 from the mounting opening 104, so that the first connecting rod 401 is detachably mounted on the first housing 10. The other end of the first connecting rod 401 is connected to one end of the first elastic member 407, and the other end of the first elastic member 407 is attached to the first housing 10. The first elastic member 407 may be any suitable elastic element, for example, the first elastic member 407 is a spring, a shrapnel, or the like. The first connecting rod 401 is hinged to one end of the second connecting rod 402, and the hinge point of the first connecting rod 401 and the second connecting rod 402 is a first hinge point. The first connecting rod 401 is further hinged to one end of the third connecting rod 403, and the hinge point of the first connecting rod 401 and the third connecting rod 403 is a second hinge point. Wherein the first hinge point and the second hinge point are not in the same position. The middle part of the third connecting rod 403 is rotatably connected to the first housing part 10.

The other end of the second connecting rod 402 is hinged to the first baffle 409, and the first baffle 409 is disposed at the first sliding port. The first shutter 409 is slidable with respect to the first sliding port. The gear member 405 is disposed in the accommodating space 103, and in order to prevent the gear member 405 from suspending, the gear member 405 may be fixed by a connecting member. Specifically, one end of the connecting piece is connected to the gear piece 405, and the other end of the connecting piece is fixedly mounted on the side wall of the groove 101. In some embodiments, the other end of the connector may also be fixedly mounted to the first housing portion 10. The gear element 405 can rotate relative to the first housing part 10, wherein the gear element 405 can be a spur gear. One end of the sliding member 404 is fixed to an end face of the other end of the third connecting rod 403, the gear member 405 is provided with a sliding hole, the other end of the sliding member 404 is inserted into the sliding hole, and the sliding member 404 is slidable in the sliding hole. The third connecting rod 403 is a rod body with a bend, for example, the third connecting rod 403 is a rod body with a right angle bend, and the other end of the sliding piece 404 can be inserted into the sliding hole of the third connecting rod 403 through bending.

The second baffle 410 is disposed at the second sliding port 106, and the second baffle 410 is slidable with respect to the second sliding port 106. The rack 406 is mounted on the second baffle 410, and the rack 406 is integrally formed with the second baffle 410. The gear member 405 is engaged with the rack 406. One end of the second baffle 410 is connected to the second elastic member 408, and the other end of the second elastic member 408 is mounted to the first housing 10. The second elastic member 408 may be any suitable elastic member, for example, the second elastic member 408 is a spring, a shrapnel, or the like.

In some cases (e.g. when replacing the moving iron unit 30), the moving iron unit 30 needs to be removed from the recess 101, and the moving iron unit 30 may be removed by pressing an end of the first connecting rod 401 away from the first elastic member 407. The specific process is as follows: when the end of the first connecting rod 401, which is far away from the first elastic member 407, is pressed, the first connecting rod 401 is pressed to move downward, and the first connecting rod 401 is hinged to the second connecting rod 402, so that the first connecting rod 401 can drive the second connecting rod 402 to move, and the second connecting rod 402 is hinged to the first baffle 409, so that the second connecting rod 402 drives the first baffle 409 to move in a first direction. Specifically, the first direction movement is a direction in which the side wall of the groove 101 provided with the first sliding port faces the inner surface of the first housing part 10. Moreover, since the first connecting rod 401 is hinged to the third connecting rod 403, the first connecting rod 401 drives the third connecting rod 403 to move; since one end of the sliding member 404 is fixed to the end surface of the other end of the third connecting rod 403, the gear member 405 is provided with a sliding hole, and the other end of the sliding member 404 is inserted into the sliding hole, so that the third connecting rod 403 drives the gear member 405; since the gear member 405 is meshed with the rack 406, the gear member 405 drives the rack 406 to move, and the rack 406 drives the second baffle 410 to move in a second direction opposite to the first direction. The moving iron unit 30 can be taken out of the groove 101 by moving the first shutter 409 in a first direction and moving the second shutter 410 in a second direction.

It should be noted that, in some other embodiments, the second elastic member 408 in the telescopic assembly 40 may be omitted, and the second baffle 410 is mounted to the first housing portion 10 when the second elastic member 408 is omitted.

It should be further noted that, in the embodiment of the present invention, an elastic member is further disposed at the bottom of the groove 101, and the elastic member and the through hole are disposed at different positions of the bottom of the groove 101. The elastic member may automatically eject the moving iron unit 30 while the first baffle 409 moves in the first direction and the second baffle 410 moves in the second direction, so that the moving iron unit 30 is not required to be manually taken out, and the moving iron unit 30 is convenient to be replaced. The resilient member may be any suitable resilient element, for example, a spring, a leaf spring, or the like. And the elastic member may be provided in plurality in order to increase the elastic force.

In the embodiment of the present invention, a first inclined surface abutting portion 4091 is provided at an end of the first baffle 409 away from the second connecting rod 402, and a second inclined surface abutting portion 4101 is provided at an end of the second baffle 410 away from the second elastic member 408. By providing the first inclined surface contact portion 4091 and the second inclined surface contact portion 4101, a new moving iron unit can be placed after the moving iron unit 30 is replaced.

In an embodiment of the present invention, the TWS earphone 100 further includes a sealing member, a damping filter, an earphone gum cover 70, and an upper cover.

The sealing member is disposed at the connection between the groove 101 and the sound outlet channel 201, so as to ensure that the sound generated by the moving iron unit 30 is completely transmitted into the sound outlet channel 201 through the through hole. The seal may be a gasket or a gasket, and may be made of any material having good sealing properties, for example, rubber.

The damping filter screen is disposed at one end of the sound outlet channel 201. Specifically, the damping filter screen is disposed at an end of the sound output channel 201 away from the recess 101. In one aspect the damping screen may be used to regulate sound; on the other hand, the damping filter may be used to prevent dust and foreign objects from entering the TWS earphone 100.

The earphone gum cover 70 is sleeved at the end of the second housing portion 20. The earphone gum cover 70 may be made of a flexible material, for example, the earphone gum cover 70 is made of silica gel. The earphone gum cover 70 may be used to secure sealability on the one hand, and the earphone gum cover 70 may be used to improve comfort when the user wears the TWS earphone 100 on the other hand.

The upper cover is provided on the first housing part 10. Specifically, the upper cover is detachably mounted on top of the first housing part 10. Wherein the upper cover may be mounted on top of the first housing part 10 by any suitable means, such as screwing, snapping, etc. The cover may protect the TWS headset 100.

The TWS headset 100 also includes a wireless communication module for communicating with external electronic devices. For example, the wireless communication module is connected with a mobile terminal to realize communication with the mobile terminal. The wireless communication module can be a Bluetooth module, a WIFI module and the like. And, the TWS earphone 100 further includes a touch key for turning on/off the wireless communication module.

According to the TWS earphone 100 provided by the embodiment of the invention, the moving iron unit 30 is used as the sound generating unit of the TWS earphone 100, so that the sound generating unit of the TWS earphone 100 is small in size and high in sensitivity, the TWS earphone 100 has good high-frequency ductility and excellent sound insulation, and the phenomenon of sound leakage can be effectively prevented.

Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present invention, and are not limiting; the technical features of the above embodiments or in the different embodiments may also be combined within the idea of the invention, the steps may be implemented in any order, and there are many other variations of the different aspects of the invention as described above, which are not provided in detail for the sake of brevity; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the invention.

Claims

1. A TWS headset (100), comprising:

a first housing part (10) provided with a groove (101), the bottom of the groove (101) being provided with a through hole;

a second housing part (20) provided with a sound emission channel (201), the groove (101) being communicated with the sound emission channel (201) through the through hole;

a moving iron unit (30) accommodated in the groove (101);

the first shell part (10) is provided with an accommodating space (103) and an installation opening (104) communicated with the accommodating space (103), the groove (101) is formed by the fact that the outer surface of the first shell part (10) is concave towards the accommodating space (103), two opposite side walls of the groove (101) are respectively provided with a first sliding opening and a second sliding opening, and the accommodating space (103) is communicated with the groove (101) through the first sliding opening and the second sliding opening;

the TWS earphone (100) further comprises a telescopic component (40) which is arranged on the first shell part (10), the telescopic component (40) comprises a first connecting rod (401), a second connecting rod (402), a third connecting rod (403), a sliding piece (404), a gear piece (405), a rack (406), a first elastic piece (407), a second elastic piece (408), a first baffle (409) and a second baffle (410), and the first baffle (409) and the second baffle (410) are used for limiting the movable iron unit (30) in the groove (101) in an abutting mode;

one end of the first connecting rod (401) is inserted into the accommodating space (103) from the mounting hole (104), the other end of the first connecting rod (401) is connected with one end of the first elastic piece (407), the other end of the first elastic piece (407) is mounted on the first shell part (10), the first connecting rod (401) is hinged with one end of the second connecting rod (402), the first connecting rod (401) is hinged with one end of the third connecting rod (403), and the middle part of the third connecting rod (403) is rotatably connected with the first shell part (10);

the other end of the second connecting rod (402) is hinged with the first baffle (409), the first baffle (409) is arranged at the first sliding port, and the first baffle (409) can slide relative to the first sliding port; the gear member (405) is arranged in the accommodating space (103), the gear member (405) can rotate relative to the first shell part (10), one end of the sliding member (404) is fixed on the end face of the other end of the third connecting rod (403), the gear member (405) is provided with a sliding hole, the other end of the sliding member (404) is inserted into the sliding hole, and the sliding member (404) can slide in the sliding hole;

the second baffle (410) is arranged at the second sliding opening, the second baffle (410) can slide relative to the second sliding opening, the rack (406) is arranged at the second baffle (410), the gear piece (405) is meshed with the rack (406), one end of the second baffle (410) is connected with the second elastic piece (408), and the other end of the second elastic piece (408) is arranged at the first shell part (10);

the TWS earphone is provided with three moving iron units (30), and the three moving iron units (30) are accommodated in the groove (101).

2. The TWS headset (100) of claim 1, wherein when an end of the first connecting rod (401) remote from the first elastic member (407) is pressed, the first connecting rod (401) drives the second connecting rod (402) to move, the second connecting rod (402) drives the first baffle (409) to move in a first direction, and the first connecting rod (401) drives the third connecting rod (403) to move, the third connecting rod (403) drives the gear member (405), the gear member (405) drives the rack (406) to move, and the rack (406) drives the second baffle (410) to move in a second direction opposite to the first direction.

3. The TWS headset (100) of claim 1, further provided with an audio input module and a crossover circuit, the crossover circuit being connected to the audio input module and the crossover circuit being further connected to the three moving iron units (30), respectively.

4. The TWS headset (100) of claim 1, wherein the three moving iron units (30) include a first moving iron unit, a second moving iron unit, and a third moving iron unit, the first moving iron unit and the second moving iron unit sounding through a first copper tube, the third moving iron unit sounding through a second copper tube.

5. The TWS earphone (100) according to claim 1, wherein the TWS earphone (100) further comprises a seal arranged at the connection of the recess (101) and the sound outlet channel (201).

6. The TWS earphone (100) according to claim 1, wherein the second housing portion (20) is provided with a sound outlet hole, the through hole of the recess (101) is aligned with one end of the sound outlet channel (201), and the other end of the sound outlet channel (201) is aligned with the sound outlet hole, so that sound generated by the moving iron unit (30) propagates to the sound outlet channel (201) through the through hole and passes from the sound outlet channel (201) through the sound outlet hole.

7. The TWS earphone (100) of claim 6, wherein the TWS earphone (100) further comprises a damping screen disposed at an end of the sound outlet channel (201) remote from the recess (101).

8. The TWS earphone (100) according to any one of claims 1-7, wherein the TWS earphone (100) further comprises an upper cover that covers the first housing portion (10).

9. The TWS earphone (100) according to any one of claims 1-7, wherein the moving iron unit (30) is of square configuration.